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kakasveta [241]
3 years ago
5

Who was the first person who went to Mars?

Chemistry
2 answers:
Novay_Z [31]3 years ago
8 0

Answer:Wernher von Braun proposal (1947 through 1950s) Wernher von Braun was the first person to make a detailed technical study of a Mars mission.

Explanation:

vekshin13 years ago
7 0
Eli Cologne was the first person who went to mars
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Write E in the blank if the material is heterogeneous or O if it is homogeneous.
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Answer/Explanation:

Wood: E

Freshly brewed black coffee: O

Water: O

Lucky Charms: E

Salt: O

Dirt: E

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Air: O

Milk: O

Gold: O

Any mixture that looks the same through the substance is homogenous. The different parts are unable to be visibly seen. (Any periodic element is homogenous)

Any mixture that can be easily determined a mix and cannot be evenly separated or dispersed is heterogenous.

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3 years ago
Which of these is a mixture of particles that are large enough to scatter or block light
Daniel [21]
The answer is C. because <span>particles settle out over time ,can block light and scatter light .</span>
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3 years ago
Sabendo que A Densidade do Metal De Chumbo e 11,3/cm3
a_sh-v [17]
Sabendo que A Densidade do Metal De Chumbo e 11,3/cm3 means Knowing that the density of lead Metal and 11,3/cm3.
3 0
3 years ago
An aqueous solution contains 0.29 M of benzoic acid (HA) and 0.16 M of sodium benzoate (A-). If the pH of this solution was meas
Inga [223]

Answer:

pKa = 4.89.

Explanation:

We can solve this problem by using the <em>Henderson-Hasselbach equation</em>, which states:

pH = pKa + log \frac{[A^-]}{[HA]}

In this case [A⁻] is the concentration of sodium benzoate and [HA] is the concentration of benzoic acid.

We <u>input the given data</u>:

4.63 = pKa + log \frac{0.16}{0.29}

And <u>solve for pKa</u>:

pKa = 4.89

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WHAT BLOCK IN THE PICTURE HAS:
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the highest is "A" and the lower is "C"

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